Teaching or demonstrating apparatus.



No.864,090.v PATBNTEDAUG.20,1907.

' H. T. FOX-ESMOND. TEACHINGORDEMONSTRATINGAPPARATUS.

APPLIOATION FILED SEPT. 11I 1906.

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PATENTED AUG. 20, 1907.

H. T. FOX-ESMOND. TEACHING 0R DEMONSTRATING APPARATUS.

APPLICATION FILED SEPT. 11, 1906.

2 SHEETS-SHEET 2.

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TEAGHIN G OR DEMONSTRATIN G APPARATUS.

naseaoeo.

Specification of Letters Patent.

Patented Aug. 20, 1907.

Application filed September 11,1906. Serial No. 334,150.

To all whom it may concern:

Be it known that I, HENRY THOMAS Fox-EsMoND, a subject and citizen ofAustralia, residing at No. 14 Margaret street, Rozelle, Sydney, State ofNew South Wales, Commonwealth of Australia, school-teacher, haveinvented new and useful Improvements in a Teaching or DemonstratingApparatus, of which the following is a specification. i

The object of my invention is to provide a teaching and demonstratingapparatus of greater efficiency than the ordinary black board or othersimilar appliance now in use for the purpose of demonstration in schoolteaching, art instruction, lecturing, or other like means of impartinginformation.

My invention consists principally of a polygonal frame of box shapeformed with two or more sides Whereon demonstrations, as stated, may beexhibited,

, such frame being so fixed on a central pillar as to be movablevertically up and down, and so as to be also rotated, so that thedifferent sides of the frame may be turned in any desired direction.

I carry out the said invention by the construction of a central pillarpreferably supported by two, three or more feet. The same can be eitherportable or fixed to the floor. Sheaves are placed into a frame fixed onthe top of the pillar, by means of which sheaves the polygonal frame issuspended by supporting cords with a balance weight working inside oroutside of the said pillar so that the frame will be movable verticallyup and down. The frame carrying the sheaves is pivoted on a ball bearingor other suitable pivot so as to rotate the polygonal frame and exhibitany side thereof as required. Demonstrations may be shown on paper orother fabric, or otherwise on every side of the frame, or rollersbearing rolls of paper or fabric may be fixed at the top of every sideso that the paper or fabric thereon may be drawn across the sides of theframe, and extend beyond it to the foot of the pillar if required. Therollers may be spring rollers or they may be actuated by hand, winding,or other means. The rollers having the rolls of paper or fabric thereonor the rolls of paper or fabric separately, may be movable for storageand further use, and several rollers may be afiixed to each side. Inaddition to the rollers I may afiix a series of one or more detachableboards to the central frame, extending such boards outwards by hangingthem on the central frame, and on one another, by suitable eyelets andpintles forming a hinged support. I may terminate the series of hingedboards by a pillar or standard, having thereon a sliding part to whichone of the hinged eyelets fit and receive support.

My invention is illustrated in the accompanying drawings in which thesame letters indicate the like parts.

Figure 1 is a perspective view of the apparatus.

Fig. 2 is the plan of a polygonal frame having four sides. Fig. 3 showsone kind of pivot which may be used on the top of the central pillar.Figs. 4, 5, and 6 show different descriptions of frames. Figs. 7 and 8respectively show an elevation and horizontal section of the apparatusshown in Fig. 1 with the additional detachable boards. Fig. 9 is anelevation of a supporting pillar or standard. Fig. 10 shows a separateview of the slide thereon.

In Fig. 1 F represents the central pillar, fixed into or removable fromthe stand G, having three feet shown in drawing to support the same. Thepillar is constructed preferably of tubing, but may be of any suitablematerial.

A A is the polygonal frame showing two sides, the same being constructedof board, card board, or other suitable flat substance.

M M are rollers fixed at the top of the sides.

B B represent paper or fabric un-rolled or partly so.

0 G are sheaves carrying supporting cords attached to the frame A A,having fixed at one end thereof a balance weight D, moving inside oroutside of the pillar. The said sheaves and the frame carrying the sameare pivoted at E on a ball bearing or other suitable pivot, in order torotate the frame A A in a horizontal plane, and so as to expose thesides in any direction.

In Fig. 2 the letters A A A A show the four sides of a polygonal framethe same being rotated at the center F.

In Fig. 3 there is shown one kind of ball bearing pivot but any suitablepivot may be used such as a 'plain pin or socket, as ordinarily used forrotation purposes. In such figure F represents part of the pillar orcentral column.

In Fig. 4 is shown a plan of a frame having three sides.

In Fig. 5 is shown a plan of a frame having two sides connectedtogether. The same would represent an ordinary teaching board havingeither side of it available for demonstration with or without rollersthereon,

elevated, and rotating as shown.

Fig. 6 is a plan of a frame having five sides. The sides of a frame maybe flat or slightly curved, and a suitable clamp may be applied to holdthe paper or fabric rigid for being written or drawn upon.

In Fig. 7 the letter N shows detachable boards, the letter O pintles oreyelets fixed to any two corners of the polygonal frame A A forming ahinge or support. Each board N is similarly provided with eyelets orpintles, so that other boards may be attached to the same as shownterminating at R- with an eyelet or pintle, which may be attached to thepillar or standard for support.

In Fig. 8 the letter N shows detachable boards,

O eyelets or pintles and R the terminating eyelet or pintle on a boardN.

In Fig. 9 F represents the pillar of the standard having thereon eyeletsor pintles P. Q, is a slide thereon capable of movement vertically onthe pillar F, and being clamped thereon in any suitable position so asto support the end of a series of boards at any desired height.

Having now fully described and ascertained my said invention and themanner in which it is to be performed I declare that What I claim is4 1. A demonstrating apparatus comprising a pillar, a frame suspendedfrom the top thereof and having vertical and rotary movement.

2. A demonstrating apparatus comprising a pillar, sheaves rotatablysupported at the upper end thereof, a frame, a weight and cords havingone end connected to the frame and passing over the sheaves and havingtheir other ends connected to the weight.

3. A demonstrating apparatus comprising a pillar, a sheave carryingframe rotatably mounted at the upper end of said pillar, a balanceweight, cords connected to said weight and passing over the sheaves anda demonstrating frame surrounding the upper end of the pillar and havingrotary and vertical movement thereon, said frame being connected to thecords.

4. A demonstrating apparatus comprising a central pillar, a framesuspended from the top of the pillar and having vertical and rotarymovement-on said pillar and demonstrating surfaces carried by saidframe.

5. A demonstrating apparatus consisting of a frame having two or moresides, so as to admit of different demonstrations being exhibitedthereon, such frame being in combination with and suspended upon acentral pillar, means for permitting rotary and vertical movement of theframe on the pillar said frame having eyelets or pintles on the edgesthereof, and in combination therewith separate demonstrating boards,having on one edge thereof pintles or eyelets to fix into the eyelets orpintles of the frame suspended on the central pillar, or into theeyelets or pintles of a board attached therto and a standard havingthereon a sliding part to which is fixed eyelets or pintles to fit intothe pintles or eyelets of a board or the last board to be supported.

6. A demonstrating apparatus consisting of a frame, having two or moresides, so as to admit of different demonstrations being exhibitedthereon, in combination with a central pillar, and with appliances forsuspending the said frame to such pillar so that said frame may havevertical and rotary movement; said frame having eyelets or pintles onthe edges thereof, and in combination therewith separate demonstratingboards, having on one edge thereof pintles or eyelets to fix into theeyelets or pintles of the frame suspended on the central pillar, or intothe eyelets or pintles of a board attached thereto; and a standardhaving thereon a sliding part to which is fixed eyelets or pintles tofit into the pintles or eyelets of a board or the last board to besupported.

Dated this twenty-eighth day of July 1906.

HENRY THOMAS FOX-ESMOND. I

Witnesses:

ALFRED R. LION, ARTHUR EDWARD GOODIN.

